back but i'm not sure it is more powerful for authoritative than other -- >> and he did it also with tax rates. we have to take a break, when we come back, secretary of state hillary clinton has a rare joint interview with the president and trades parting shots with congress. ♪ >> chris: still to come our power player of the week. he says he's not a biographer, he's a student of power. how you get it, and what you do with it. >> you are at war, because you are constantly saying, look what he's doing now. >> chris: stay tuned, we'll be right back. >> president barack obama: i want to have a chance to publicly say thank you. because, i think hillary will go down as one of the finest secretary of states we have had. >> president obama asked me to be secretary of state and i said yes, and why did he ask me and why did i say yes? because we both love our country. >> chris: president clinton and hillary clinton, in an unusual joint interview as she ends four years as secretary of state. we're back with the panel, apparently the president called "60 minutes" and said i'd